diff --git a/GNUmakefile b/GNUmakefile
index 81240ef59b..ad5454991c 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -329,7 +329,6 @@ codegen-tools:
 .PHONY: deep-copy
 deep-copy:
 	@$(SHELL) $(CURDIR)/agent/structs/deep-copy.sh
-	@$(SHELL) $(CURDIR)/proto/pbpeering/deep-copy.sh
 	@$(SHELL) $(CURDIR)/agent/proxycfg/deep-copy.sh
 
 version:
diff --git a/proto/pbpeering/deep-copy.sh b/proto/pbpeering/deep-copy.sh
deleted file mode 100755
index 48acdd4a13..0000000000
--- a/proto/pbpeering/deep-copy.sh
+++ /dev/null
@@ -1,11 +0,0 @@
-#!/usr/bin/env bash
-
-readonly PACKAGE_DIR="$(dirname "${BASH_SOURCE[0]}")"
-cd $PACKAGE_DIR
-
-# Uses: https://github.com/globusdigital/deep-copy
-deep-copy -pointer-receiver \
-  -type PeeringTrustBundle \
-  -o ./peering.deepcopy.go \
-  ./
-
diff --git a/proto/pbpeering/peering.deepcopy.go b/proto/pbpeering/peering.deepcopy.go
deleted file mode 100644
index 7ba92d425c..0000000000
--- a/proto/pbpeering/peering.deepcopy.go
+++ /dev/null
@@ -1,17 +0,0 @@
-// generated by deep-copy -pointer-receiver -type PeeringTrustBundle -o ./peering.deepcopy.go ./; DO NOT EDIT.
-
-package pbpeering
-
-// DeepCopy generates a deep copy of *PeeringTrustBundle
-func (o *PeeringTrustBundle) DeepCopy() *PeeringTrustBundle {
-	var cp PeeringTrustBundle = *o
-	if o.unknownFields != nil {
-		cp.unknownFields = make([]byte, len(o.unknownFields))
-		copy(cp.unknownFields, o.unknownFields)
-	}
-	if o.RootPEMs != nil {
-		cp.RootPEMs = make([]string, len(o.RootPEMs))
-		copy(cp.RootPEMs, o.RootPEMs)
-	}
-	return &cp
-}
diff --git a/proto/pbpeering/peering.go b/proto/pbpeering/peering.go
index b5d36e73dd..511de42c57 100644
--- a/proto/pbpeering/peering.go
+++ b/proto/pbpeering/peering.go
@@ -10,6 +10,7 @@ import (
 	"github.com/golang/protobuf/ptypes/timestamp"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials"
+	"google.golang.org/protobuf/proto"
 
 	"github.com/hashicorp/consul/agent/structs"
 	"github.com/hashicorp/consul/api"
@@ -302,3 +303,14 @@ func TimePtrToProto(s *time.Time) *timestamp.Timestamp {
 	}
 	return structs.TimeToProto(*s)
 }
+
+// DeepCopy returns a copy of the PeeringTrustBundle that can be passed around
+// without worrying about the receiver unsafely modifying it. It is used by the
+// generated DeepCopy methods in proxycfg.
+func (o *PeeringTrustBundle) DeepCopy() *PeeringTrustBundle {
+	cp, ok := proto.Clone(o).(*PeeringTrustBundle)
+	if !ok {
+		panic(fmt.Sprintf("failed to clone *PeeringTrustBundle, got: %T", cp))
+	}
+	return cp
+}